77614393 has 2 divisors, whose sum is σ = 77614394. Its totient is φ = 77614392.

The previous prime is 77614391. The next prime is 77614457. The reversal of 77614393 is 39341677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40793769 + 36820624 = 6387^2 + 6068^2 .

It is an emirp because it is prime and its reverse (39341677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77614393 - 2¹ = 77614391 is a prime.

Together with 77614391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77614391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38807196 + 38807197.

It is an arithmetic number, because the mean of its divisors is an integer number (38807197).

Almost surely, 2^77614393 is an apocalyptic number.

It is an amenable number.

77614393 is a deficient number, since it is larger than the sum of its proper divisors (1).

77614393 is an equidigital number, since it uses as much as digits as its factorization.

77614393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 77614393 is about 8809.9031209202. The cubic root of 77614393 is about 426.5606162073.

The spelling of 77614393 in words is "seventy-seven million, six hundred fourteen thousand, three hundred ninety-three".